JP4193157B2 - Reinforcement structure for vehicle and method for manufacturing the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reinforcement structure for a vehicle and a method for manufacturing the same.
[0002]
[Prior art]
A vehicle such as an automobile is provided with a reinforcement as shown in FIG. 12 at the front and rear of the vehicle body in order to receive an external load input, and a CC cross-sectional view of the reinforcement is illustrated. As shown in FIG. 13, the two closed cross sections are formed in the load input direction, so that it has excellent rigidity as compared with a conventional square (square) shape reinforcement.
[0003]
The reinforcement having such a structure has been conventionally manufactured by welding a plurality of previously bent members as indicated by arrows in FIG. 13, but in recent years, it has been provided in a so-called roll molding machine. By continuously bending a single metal plate using a plurality of processing rollers, two closed cross sections as shown in FIG. 13 are formed, and then both ends and the central portion of the bent metal plate are in contact with each other. A method of welding at a position (corresponding to the welding position P in FIG. 13) is proposed in Japanese Patent Laid-Open No. 9-141329.
[0004]
[Problems to be solved by the invention]
According to the method proposed in the above conventional example, the manufacturing cost can be reduced as compared with a method of welding a plurality of previously bent members at a plurality of locations as shown in FIG.
[0005]
However, in such a manufacturing method, after the molding by the roll molding machine is completed, a process of welding a position corresponding to the welding position P in FIG. 13 is necessary. That is, the welding machine cannot be removed from the reinforcement production line including the roll forming machine which extends to several tens of meters for welding at the position, and the productivity is not good.
[0006]
Accordingly, an object of the present invention is to provide a highly rigid vehicle reinforcement structure formed only by bending and a method for manufacturing the same.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a reinforcement structure for a vehicle according to the present invention is characterized by the following configuration.
[0008]
That is, a reinforcement structure for a vehicle formed by bending a single metal plate so that a plurality of closed sections are provided side by side with respect to the load input direction.
Where formed parallel to the line folded surface of the metal plate, the groove portion having an opening is formed one on the outboard direction, the both ends of the metal plate to be inserted in the groove portion, The plurality of closed cross sections are formed.
[0009]
Further, the present invention is a vehicle reinforcement structure formed by bending a single metal plate so that a plurality of closed cross-sections are provided side by side with respect to a load input direction, and a bending line is formed on a surface portion of the metal plate. Two grooves having openings in the vehicle body outward direction are formed, and the ends of the metal plate are inserted into the grooves one by one, thereby forming the plurality of closed sections. It is characterized by being .
[0010]
In order to achieve the above object, a method for manufacturing a reinforcement structure for a vehicle according to the present invention is characterized by the following configuration.
[0011]
That is, it is a method for manufacturing a reinforcement structure for a vehicle in which a single metal plate is continuously bent using a roll forming machine so that a plurality of closed cross sections are provided side by side in the load input direction. A first step of forming a groove in the center of the surface of the metal plate, a second step of projecting the surface including the groove formed in the first step,
By inserting a plurality of portions on both sides of the surface portion projected in the second step in parallel with the groove portion, and inserting both ends of the metal plate bent in the third step into the groove portion, And a fourth step of forming the plurality of closed cross sections.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, a vehicle reinforcement structure and a manufacturing method thereof according to the present invention will be described in detail with reference to the drawings as an embodiment in which the vehicle is applied to front and rear bumpers of an automobile, which is a typical vehicle.
[0013]
FIG. 1 is a perspective view showing an outer shape of a reinforcement in the present embodiment. FIG. 2 is a cross-sectional view showing the structure of the reinforcement shown in FIG.
[0014]
As shown in FIGS. 1 and 2, the reinforcement 1 according to the present embodiment is formed by bending a single metal plate (for example, a high-strength steel plate) at a plurality of locations, and an assumed load. It has a structure in which two closed sections 13 and 14 are formed in the vertical direction with respect to the input direction.
[0015]
Both ends of one metal plate constituting the reinforcement 1 are inserted into the groove 11. In this embodiment, this portion is not welded, and both end portions of the metal plate are merely inserted into the groove portion 11, but an external force in the load input direction is applied to the reinforcement 1. When added, the both end portions are further brought into contact with the bottom direction of the groove portion 11, so that the both end portions can be prevented from being detached from the insertion portion.
[0016]
Further, as shown in FIGS. 1 and 2, the surface portion including the groove portion 11 has a shape protruding to the vicinity of the outer edge portion on the inner side from the outer edge portion side (the load input side) of the reinforcement 1 in the vehicle body outer direction. Thus, the rigidity against external force is increased.
[0017]
The slope 12 is provided to facilitate insertion of both end portions of the metal plate into the groove portion 11 when the reinforcement 1 is bent at a plurality of locations by a method described later.
[0018]
The mounting method of the completed reinforcement 1 as shown in FIG. 1 and FIG. 2 is the same as the mounting method of the reinforcement having the conventional structure. Here, the reinforcement 1 having such a structure is used as an automobile. An example of mounting applied to the front and rear bumpers will be outlined.
[0019]
FIG. 3 is a diagram showing a front structure of an automobile using a reinforcement in the present embodiment. A reinforcement 1 (for front) is a general structure using bolts 3 at the end of a body frame 2. It is concluded by the method.
[0020]
4 is a view showing a cross-sectional structure of the front bumper of the automobile together with the AA cross section of the reinforcement 1 shown in FIG. 3. In the vehicle outer direction of the reinforcement 1, a resin shock absorbing member is shown. 4 and a bumper cover 5 covering its surface is mounted.
[0021]
FIG. 5 is a diagram showing a rear structure of an automobile using a reinforcement according to the present embodiment. A reinforcement 1 (for rear) is a general structure using bolts 3 at the end of a rear end panel 6 of a vehicle. It is concluded by various methods.
[0022]
6 is a view showing a cross-sectional structure of the rear bumper of the automobile together with a BB cross section of the reinforcement 1 shown in FIG. A member 7 and a bumper cover 8 covering the surface are mounted.
[0023]
Next, a method for manufacturing the above-described reinforcement 1 will be described. In the present embodiment, the reinforcement 1 having the structure shown in FIGS. 1 and 2 is formed by continuously bending a single metal plate using equipment as shown in FIG.
[0024]
FIG. 7 is a diagram illustrating a manufacturing facility including a roll processing machine that can be employed in the present embodiment.
[0025]
In the figure, reference numeral 101 denotes a metal roll in which a band-shaped metal plate is wound in a roll shape. Reference numeral 102 denotes a feeder that continuously feeds a strip-shaped metal plate from the metal roll 101 in the right direction in FIG. Reference numeral 103 denotes a roll processing machine, which includes a plurality of processing rollers that gradually bend the band-shaped metal plate sent by the feeder 102. Reference numeral 104 denotes a finishing machine that performs a bending process on the metal plate having a closed cross section according to the shape of the front side or the rear side of the vehicle body and cuts the metal plate into a predetermined size.
[0026]
Next, a bending process performed by a plurality of processing rollers of the roll processing machine 103 will be described.
[0027]
FIG. 8 to FIG. 10 are views showing a reinforcement manufacturing process in the present embodiment, and the front-rear direction of the figure is the conveying direction of the metal plate.
[0028]
In the present embodiment, by using the roll processing machine 103, a bending process from No. 0 to No. 23 shown in FIGS. The cross-sectional shape of the reinforcement 1 is obtained. Each process of this bending process is performed by 23 types of process rollers provided in the roll processing machine 103 along the conveyance direction of a metal plate. Here, each process will be described in four parts.
[0029]
1st process (No0-No4): A groove part is gradually formed as shown to No0-No4 in the longitudinal direction center of the surface part of one strip | belt-shaped metal flat plate. This groove corresponds to the groove 11 shown in FIG.
[0030]
2nd process (No5-No8): The surface part containing the groove part formed at the 1st process is made to protrude gradually as shown to No5-No8.
[0031]
Third step (No. 9 to No. 20): A plurality of locations on both sides of the surface portion projected in the second step are gradually bent in parallel with the groove formed in the first step. This 3rd process includes process No12-No13 which provides the inclined part equivalent to slope 12 shown in Drawing 2 near the both ends of the metal plate concerned.
[0032]
Fourth step (No. 21 to No. 23): Two closed sections are formed by inserting both end portions of the metal plate bent in the third step into the groove formed in the first step. These closed sections correspond to the closed sections 13 and 14 shown in FIG. At the time of insertion, since the inclined portions are provided in the vicinity of both end portions of the metal plate in the above-described third step Steps No. 12 to No. 13, the both end portions can be easily formed into the groove portions 11 in Step No. 20 to No. 23 only by the processing roller. Can be inserted.
[0033]
The metal plate having the two closed cross sections formed by the roll processing machine 103 is further sent to the finishing machine 104, bent into a predetermined R (arc) shape, and cut into a predetermined size. The reinforcement 1 shown in 1 is completed.
[0034]
As described above, according to the present embodiment, the bending process described above is realized by the roll processing machine 103, so that a high-rigidity reinforcement similar to the conventional example described above is incorporated into the production line. Instead, it can be manufactured only by bending. As a result, the productivity can be improved and the limited production space can be effectively utilized.
[0035]
<Modification of Embodiment>
In the embodiment described above, both end portions of the metal plate are inserted into the groove portion 11 as shown in FIG. 2, but the present invention is not limited to this, and two groove portions are provided in parallel as in the present modification, respectively. You may comprise so that the edge part of the said metal plate may be inserted into the groove part one by one. Also in this case, the flow of the manufacturing process is substantially the same as each process of FIGS. 8 to 10 described above, and in the first process, two grooves are formed in parallel to the longitudinal center line of the strip-shaped metal plate. Somewhat different.
[0036]
FIG. 11 is a cross-sectional view of a reinforcement as a modification of the present embodiment.
[0037]
In the figure, the reinforcement 9 is formed with two grooves 91 and 92, and the ends of the metal plate bent into these grooves are inserted one by one, whereby closed cross sections 93 and 94 are formed. Is formed. Further, the surface portion between the groove portion 91 and the groove portion 92 is formed in a shape protruding to the vicinity of the outer edge portion on the inner side from the outer edge portion side (the load input side) of the reinforcement 9 in the vehicle body outer side direction, This increases the rigidity against external force.
[0038]
Also according to this modification, a high-rigidity reinforcement can be manufactured only by bending as in the above-described embodiment.
[0039]
In the above-described embodiment, the reinforcement according to the present embodiment is applied to the front and rear bumpers of the automobile. However, the present invention is not limited to this. For example, it is used as an impact bar provided inside the door. You may do it.
[0040]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a reinforcement structure for a highly rigid vehicle formed only by bending and a method for manufacturing the same.
[0041]
That is, according to the invention of claim 1, the groove in the metal plate to form one, by inserting the both end portions in the groove portion, reinforcement of the high rigidity is achieved by bending only. According to the invention of claim 3, by forming two groove portions in the metal plate and inserting the end portions into the groove portions one by one, a highly rigid reinforcement can be realized only by bending.
[0042]
In addition, according to the invention of claim 2 or claim 4 , it is possible to realize a more rigid reinforcement.
[0043]
According to the invention of claim 7, a highly rigid reinforcement can be produced only by bending.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an outer shape of a reinforcement in the present embodiment.
2 is a cross-sectional view showing the structure of the reinforcement shown in FIG. 1. FIG.
FIG. 3 is a diagram showing a front structure of an automobile using a reinforcement according to the present embodiment.
4 is a view showing a cross-sectional structure of a front bumper of an automobile, along with the AA cross section of the reinforcement 1 shown in FIG. 3. FIG.
FIG. 5 is a diagram showing a rear structure of an automobile using a reinforcement according to the present embodiment.
6 is a view showing a cross-sectional structure of a rear bumper of an automobile, along with a BB cross section of the reinforcement 1 shown in FIG. 5. FIG.
FIG. 7 is a diagram illustrating a manufacturing facility including a roll processing machine that can be employed in the present embodiment.
FIG. 8 is a diagram showing a manufacturing process of a reinforcement in the present embodiment.
FIG. 9 is a view showing a reinforcement manufacturing process in the embodiment.
FIG. 10 is a diagram illustrating a reinforcement manufacturing process according to the present embodiment.
FIG. 11 is a cross-sectional view of a reinforcement as a modification of the present embodiment.
FIG. 12 is a diagram showing a reinforcement structure as a conventional example.
13 is a CC cross-sectional view of the reinforcement shown in FIG.
[Explanation of symbols]
1, 9, 110: Reinforcement,
2: Vehicle frame,
3: Bolt,
4, 7: shock absorbing member,
5, 8: Bumper cover,
6: Rear end panel,
11, 91, 92: groove part,
13, 14, 93, 94: closed section,
101: Metal roll,
102: Feeder,
103: Roll processing machine,
104: Finishing machine,

Claims (8)

A reinforcement structure for a vehicle formed by bending a single metal plate so that a plurality of closed cross sections are provided side by side with respect to a load input direction,
Where formed parallel to the line folded surface of the metal plate, the groove portion having an opening is formed one on the outboard direction, the both ends of the metal plate to be inserted in the groove portion, A vehicle reinforcement structure, wherein the plurality of closed cross sections are formed. It said surface comprising a groove, the reinforcement inside the outer edge portion of the vehicle body outer side of the structure, reinforcement structure for a vehicle according to claim 1, characterized in that it is formed near the outer edge. A reinforcement structure for a vehicle formed by bending a single metal plate so that a plurality of closed cross sections are provided side by side with respect to a load input direction,
Where formed parallel to the line folded surface of the metal plate, the groove having an opening is formed two in the outboard direction, by the end of the metal plate on their grooves are inserted one by one A reinforcement structure for a vehicle, wherein the plurality of closed cross sections are formed. 4. The vehicle reinforcement according to claim 3 , wherein a surface portion between the two groove portions is formed in the vicinity of the outer edge portion on the inner side of the outer edge portion in the vehicle body outer side direction of the reinforcement structure. Construction. Wherein the plurality of closed cross-section, the reinforcement structure for a vehicle according to claim 1 or 3, wherein the formed up and down relative to the load input direction. The reinforcement structure reinforcement structure for a vehicle according to claim 1 or 3 wherein it is a bumper. A method for manufacturing a reinforcement structure for a vehicle that is formed in a state in which a plurality of closed cross sections are provided side by side with respect to a load input direction by continuously bending a single metal plate using a roll molding machine,
A first step of forming a groove in the center of the surface of the metal plate;
A second step of projecting the surface portion including the groove formed in the first step;
A third step of bending a plurality of portions on both sides of the surface portion protruded in the second step in parallel with the groove portion;
A fourth step of forming the plurality of closed cross sections by inserting both end portions of the metal plate bent in the third step into the groove portion;
A method for manufacturing a reinforcement structure for a vehicle, comprising: In the third step, sloped bent portions are formed in the vicinity of both end portions of the metal plate, respectively, thereby facilitating insertion of the both end portions of the metal plate into the groove portion in the fourth step. A method for manufacturing a reinforcement structure for a vehicle according to claim 7 .

Images